HT instruments HT157 - Manual (Page 49)

HT155 - HT157
EN - 47
7.1.5. RECALLING THE DATA OF THE ANALYSIS IN THIRD-OCTAVE BAND (1/3) ON
THE DISPLAY
1. Select a datum corresponding to the “1/3OCT” indication available in the list of saved
measures and press “ ”. The instrument shows the following screens, which can be
selected by using the “ ” or “ ” keys
Fig. 51: Numerical screens of 1/3 analysis data
Line 1 (Page1)
This line shows the measure name defined in the programming menu
(see § 4.6)
Line 2 (Page1) This line shows the date/time when measurement was started
Line 3 (Page1) The type of “1/3OCT” measurement is shown
Line 4 (Page1) This line shows the measuring range selected before starting measuring
Lines 5-10
These lines show the numerical values measured by the instrument
(Leq1s o Leq,T), divided into each central band frequency, f0 (Hz),
considered
CAUTION
Independently from the type of frequency weighting selected for measurement,
the saved data include anyway also the results obtained with Z (Zero)
weighting
2. Press the “ ” key to access the graphic display of the spectrum analysis in 1/3 octave
band. The instrument displays the following screen:
Fig. 52: Graphic display of 1/3 spectrum analysis
3. Press the “ ” key to go back to the previous screen and to the initial screen